Americans marked a Memorial Day like no other Monday as the coronavirus pandemic upended traditional commemorations. In Chicago, a neighborhood group that’s been holding a parade for more than a half century moved its event online.

President Donald Trump played golf at one of his courses Saturday during the Memorial Day weekend as he urged U.S. states to reopen after coronavirus-related lockdowns. Yet many Americans remained cautious.

Medical experts warn that the virus won’t take a holiday for the unofficial start of summer. The Centers for Disease Control and Prevention recommends that people stay home, avoid crowds and connect with family and friends by phone or video chat.

Memorial Day is traditionally one of the busiest weekends in the Forest Preserves, but because of COVID-19, people are being encouraged to hold cookouts, picnics and other holiday activities at home this year.

In the latest sign that the coronavirus pandemic will reshape summer in Chicago, city officials informed aldermen Tuesday that no permits will be issued for block parties through May 31 — banning the popular parties on Memorial Day weekend.